104 entries under substantial topic. ×

2
hard as nails(expression, adjective, idiom, strong, hard)
2
healthy(adjective, strong, hard, solid, heavy)
2
heavy(adjective, strong, sound, tough, solid)
2
immobile(strong, secure, stable, unmoving)
2
in fine feather(expression, adjective, idiom, strong, sound)
2
secure(adjective, calm, strong, sound, tough)
2
set in stone(expression, adjective, idiom, calm, strong)
2
sinewy(adjective, strong, hard, sound, tough)
2
solid as a rock(expression, adjective, idiom, calm, strong)
2
sure(adjective, calm, strong, secure, firm)
2
unvarying(adjective, calm, strong, secure, firm)
1
able(adjective, strong, sound, tough, solid)
1
active(adjective, strong, sound, tough, solid)
1
anchored(calm, strong, secure, solid, steady)
1
athletic(adjective, strong, sound, tough, solid)
1
balanced(adjective, calm, strong, secure, firm)
1
brick-wall(adjective, calm, strong, secure, firm)
1
calm(adjective, strong, secure, firm, solid)
1
capable(adjective, strong, sound, tough, solid)
1
deep-rooted(adjective, calm, strong, solid, steady)
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APASmart Define. (2015). durable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/durable/thesaurus/synonyms
ChicagoSmart Define. 2015. "durable thesaurus" https://smartdefine.org/durable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, durable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/durable/thesaurus/synonyms>.
MLASmart Define. "durable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/durable/thesaurus/synonyms>